North America 22 Sep 2026 · Dr Natalya Mathur
ENCLAI ID ENCLAI-2026-0000423-9 · Cite

Dengue in the US: 205 cases in 90 days, 108 in the last 30

ENCLAI SURVEILLANCE BRIEFING · 22 SEPTEMBER 2026Dengue in the US: 205 cases in 90 days,108 in the last 30Dengue fever · The US · reported cases108reported cases in the 30 days to 22 September▲ 54% more than the 30 days before (70)70The 30 daysbefore154Same 30 days, ayear earlier20590 days to 22September3662026 so farThree 30-day windows154A year earlier7030 days before108Last 30 daysLargest counts, last 90 daysBrazil69,753Mexico35,487Malaysia22,460Singapore953Nepal274The US20517 countries with a reported count in this windowWhat this briefing shows1Reported cases rose from 70 to 108 between the two latest 30-daywindows, 54% more.2The latest count of 108 is below the 154 reported in the same 30days a year earlier.3The US accounts for 0.1% of the dengue cases reported to ENCLAIworldwide in 2026 and ranks 16 of 32 reporting countries.Read with care: reports to official surveillance, not people and not a rate. A change between30-day windows can come from reporting timing as much as from transmission.Source: official surveillance reports compiled by ENCLAI · data as of 2026-09-22 ·enclai.net/newsVerify every figure against the source data before use; ENCLAI does not guarantee accuracy orcompleteness.
  1. Reported cases rose from 70 to 108 between the two latest 30-day windows, 54% more.
  2. The latest count of 108 is below the 154 reported in the same 30 days a year earlier.
  3. The US accounts for 0.1% of the dengue cases reported to ENCLAI worldwide in 2026 and ranks 16 of 32 reporting countries.
Customise it in Visual Studio
Largest included reported counts (6 of 17 countries) · 2026-06-24 through 2026-09-22 · source-record dates; coverage varies
Brazil69,753
Mexico35,487
Malaysia22,460
Singapore953
Nepal274
United States205
Dengue fever — United States · reported surveillance count · 2026-06-24 through 2026-09-22 · inclusive source-record dates
Dengue fever — United States · reported surveillance count · 2026-08-23 through 2026-09-22 · inclusive source-record dates
Dengue fever — United States · reported surveillance count · 2026-07-23 through 2026-08-22 · inclusive source-record dates
Dengue fever — United States · reported surveillance count · 2025-08-23 through 2025-09-22 · inclusive source-record dates
Dengue fever · combined reported surveillance count · 2026-06-24 through 2026-09-22 · inclusive source-record dates
Dengue fever · weekly reported-count series · Weeks starting 2026-06-15 through 2026-08-31
Largest included reported counts (6 of 17 countries) · 2026-06-24 through 2026-09-22 · source-record dates; coverage varies

The full briefing

Full 2026 picture: Dengue fever in United States — reported cases by year, monthly records and every briefing for this pair.

The US reported 205 dengue cases in the 90 days to 22 September. 108 of them came in the 30 days to 22 September, against 70 in the 30 days before. The same 30 days a year earlier had 154.

Why it matters

The US accounts for 0.1% of the dengue cases reported to ENCLAI worldwide so far in 2026. It ranks 16 of 32 reporting countries.

The numbers

PeriodReported cases
Last 30 days (to 22 September)108
The 30 days before that70
Same 30 days a year earlier154
90 days to 22 September205
2026 so far (ENCLAI export)366
The card shows dengue in the US. It compares the last 30 days with the 30 days before, as reported to ENCLAI.
The card shows dengue in the US. It compares the last 30 days with the 30 days before, as reported to ENCLAI.

What the source says

These figures come from official surveillance reports. They count reports, not people. They are not an incidence rate, the rate of new cases in a population. They do not cover the whole population. The reporting periods do not match these dates exactly. Some reports are incomplete or still in progress. Some run past the window. Some reports do not say which date they use: symptom onset, notification, or confirmation.

Caveats

  • A change between two 30-day windows can come from reporting timing as much as from transmission. The source does not say which.

Where to learn more

Dengue fever in the US: the 2026 picture · Dengue fever worldwide · the US: all diseases · How to read these counts

Retained reporting context

Included reporting countries

Dengue fever

129,669

combined reported surveillance count

2026-06-24 through 2026-09-22 · inclusive source-record dates

For Dengue fever, the combined reported surveillance count across the 17 countries with positive reported counts in this selection is 129,669. The selection uses source-record dates 2026-06-24 through 2026-09-22, inclusive. This covers only these reporting countries; source periods and completeness vary.

Exact included country membership
CountryReported countSource-record dates
American Samoa572026-06-24 through 2026-09-22
Australia1332026-06-24 through 2026-09-22
Bulgaria22026-06-24 through 2026-09-22
Brazil69,7532026-06-24 through 2026-09-22
Germany502026-06-24 through 2026-09-22
Finland42026-06-24 through 2026-09-22
United Kingdom582026-06-24 through 2026-09-22
Hong Kong32026-06-24 through 2026-09-22
South Korea362026-06-24 through 2026-09-22
Mexico35,4872026-06-24 through 2026-09-22
Malaysia22,4602026-06-24 through 2026-09-22
Nepal2742026-06-24 through 2026-09-22
New Zealand212026-06-24 through 2026-09-22
Puerto Rico1192026-06-24 through 2026-09-22
Singapore9532026-06-24 through 2026-09-22
Taiwan542026-06-24 through 2026-09-22
United States2052026-06-24 through 2026-09-22

Snapshot 2026-09-22

Weekly reporting history

Dengue fever

weekly reported-count series

Weeks starting 2026-06-15 through 2026-08-31

A retained retrospective weekly reported-count series across included reporting countries. Country membership and reporting completeness can vary by week. Missing weeks remain gaps. This is a separate report-series measure; it does not establish exact incidence or laboratory confirmation.

Retained weekly report series
WeekReported count
2026-06-15 through 2026-06-2115017
2026-06-22 through 2026-06-2817749
2026-06-29 through 2026-07-0513326
2026-07-06 through 2026-07-1212199
2026-07-13 through 2026-07-1912451
2026-07-20 through 2026-07-2614425
2026-07-27 through 2026-08-0215499
2026-08-03 through 2026-08-0915881
2026-08-10 through 2026-08-1617817
2026-08-17 through 2026-08-2316325
2026-08-24 through 2026-08-3013059
2026-08-31 through 2026-09-066040

Snapshot 2026-09-21

Sources and limitations

  • Window. Each quantity keeps its recorded source-selection dates and coverage notes. Dated batches and weekly or genomic observations retain their separate measures. Publication or capture dates do not establish case onset, equal cohorts or period completeness.
  • Denominator. The retained counts do not establish complete populations, equal reporting cohorts or incidence rates. Source period bounds and definitions can differ.
  • Case definition. Case definitions are set nationally and change over time. Counts for the same disease in different countries may not be counting the same thing.
  • Revisions. Agencies restate figures. Values here are as reported at the time of publication; see the update history below.

ENCLAI counts reflect verified records available from reporting sources for the stated window. They are not estimates of total incidence and should not be interpreted as medical advice. Full methodology: the dataset.

Review and corrections

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